Tree stand



FIG. 1 is a perspective view of a tree stand showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 a rear elevational view thereof;

FIG. 4 is a side elevational view as seen from the left side of FIG. 2;

FIG. 5 is a side elevational view as seen from the right side of FIG. 2;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The ornamental design for a tree stand, as shown and described.